Window construction



' Jan. 17, 1939. o. M. EDWARDS ET AL I Y 2,144,105

WINDOW CONSTRUCTION Filed June 24, 1936 -2 Shets-Sheetl Z 2 HZEIQTORS.F951 BY a ATTORNEY 5 0. M. EDWARDS ET AL WINDOW CONSTRUCTION Jan. 17,1939.

Fild June 24, 1956 2 Sheets-Sheet 2 Patented Jan. 17, 1939 UNITED STATESPATENT OFFICE WINDOW CONSTRUCTION poration of New York Application June24, 1936, Serial No. 87,058

4 Claims. (Cl. 189-66) This invention relates to window constructions,more particularly to window structures for buildings, as publicbuildings, hospitals, hotels, oflice buildings, residences, etc., andhas for its object a window structure including a compound sash capableof being raised and lowered, as a unit, and including inner and outersash frames, the inner frame, which carries the glass, being movableinto an open position relatively to the outer sash frame, as into aninclined position, for the purpose of providing a ventilating opening.

It further has for its object such a compound sash together with meansfor preventing the opening or lowering of the compound sash when theinner sash is in open or inclined position, which means is operable bythe opening and closing of the inner sash of the compound sash.

It furtherhas for its object a sash lock which looks the sash from beingraised and lowered and at the same time locks the inner sash fromopening movement or movement to an inclined position.

Other objects appear throughout the specifica tion.

The invention consists in .the novel features and in the combinationsand constructions hereinafter set forth and claimed.

In describing this invention, reference is had tothe accompanyingdrawings in which like characters designate corresponding parts in allthe views.

Figure 1 is a fragmentary elevation of a Window structure embodying thisinvention.

Figure 2 is a verticalsectional view on line 2-2, Figure 1.

Figure 3 is a fragmentary sectional View on the plane of line 3-4,Figure 1.

Figure 4 is a fragmentary elevation illustrating a modified way ofhinging the inner sash; Figure 5 is a sectional view looking to the leftin Figure 4. v

This window construction comprises, generally,

7 a window frame formed with a sash guide, a compound sash movable inthe guide and comprising outer and inner sash frames, thev inner sashframe being mounted to have an opening and closing movement in a generaldirection at a right angle to the plane of the sash to provideventilation without drafts, and means operable by the moving of theinner sash into open position for locking the sash from movement along 7the sash guide out of closed position. This locking means is normallyarranged out of the vertical plane of a cross bar and is movable intosaid plane near the cross bar upon a small movement of the inner sashframe from its closed position, so that unless the inner sash frame isclosed, the sash can not be raised.

I designates the window frame which may be of any suitable constructionand formed with sash guides, the frame here illustrated being of metal.Also, the window structure here illus-- trated includes upper and lowersashes, each of which is capable of being raised and lowered with thetop rail of the lower sash and the bottomrail of the upper sash abuttingor lapping each other, when both sashes are closed, the bottom rail ofthe upper sash being a cross bar in. the window structure, against whichthe top rail of the lower sash abuts or laps when closed. The upper sashmay be stationary.

The sash guides here shown are of the interfitting channel and groovetype, the window frame having ribs 2 which extend into channels in theedges of the sash.

3 designates the upper sash. The lower sash is acompoundsash andincludes an outer sash frame t and an inner sash frame 5 shiftablymounted in the outer sash frame 4 and movable relatively to the frame 4to provide a ventilating passage without raising the lower sash. Thestiles of the upper sash 3 and the outer sash frame 4 of the compoundsash are provided with channels, as 6, opening through the edge of eachstile, into which channels one of the ribs 2 extend. Suitablenon-metallic U-shaped weather strips, as 1, are fixed in the channels 6to coact with the ribs 2.

The outer frame 4 of the compound sash is provided with a suitable lifthandle 8 along its bottom rail and practically being a part thereof.This is shown as extending nearly the full width of the bottom rail.This form of lift handle stiiiens the bottom rail to which the liftingforce is applied and also acts to cause the window to lift easily whenthe lifting force is unevenly applied at one side or the other of thecenter of the bottom rail. 7

A suitable sash lock I2 is provided on the top rail of the outer sash 4,this coacting with a keeper or latch plate !3 on the bottom rail of theupper sash 3. This sash lock is of the cam type that moves about anupright pivot l4 into and out of locking position. It also operates alock to hold the inner sash 5 in closed position, when the lock it isoperated into locked position.

The inner sash frame 5 fits the outer frame '4 and is preferablypivotally mounted therein at or near its lower edge to swing out of theplane ofthe compound sash. into the position shown in Figure 2, in orderto provide ventilation without drafts.

As seen in Figure 2, the inner movable sash frame 5 is hinged at itslower edge, as by a piano hinge at l5, to the upper edge of the bottomrail within the sash frame 4.

One of the features of this window construction is means operated by themovement of the inner sash frame 5 to an open or an inclined position tolock the lower sash from being raised or the upper sash, if it ismovable, from being lowered.

One embodiment of this means comprises a link l6 pivoted at each side ofthe sash frame 5 near the upper end thereof and also pivoted to thestile of the outer frame 4, this link being arranged to lie between theouter edge of the inner frame 5 and the inner edge of the stile of theouter' frame 4, a recess being provided in one of the stiles for thelink. The link is pivoted to the stile of the outer frame 4 at IT and ispivotally connected at its inner end at l8 to the stile of the innerframe 5, the link being provided with a slot IQ for receiving the pivotI8. The link I6 is also provided with an arm 20 extending to theopposite side of the pivot I! to that on which the pivot I8 is locatedand into the plane or path of the upper sash 3 when the inner sash frame5 is swung to an inclined position. The link I6 is located near theupper end or top rails of the inner and outer sash frames 4, 5 so thatwhen the inner frame 5 is swung into inclined position, the end of thearm 20 is close to the bottom rail of the upper sash 3. Also, the slotI9 terminates short of the pivot I! or in position to delay movement ofthe arm 20 sufficiently to move out of the path of the bottom rail ofthe upper sash 3 until the inner frame 5 is in nearly closed position.

It is difficult to close the inner frame 5 to entirely closed positionfrom the outside of the window, and therefore an intruder could noteasily or stealthily entirely close the inner sash 5 into the plane ofthe sash 4 and then raise the lower sash or lower the upper sash. Anintruder might easily reach in and unlock the lock l2, if the inner sash5 were in inclined position, but would have difficulty in raising thesash, because of the difficulty in entirely closing the inner frame 5into the plane of the outer sash 4.

Suitable spring-pressed poppets 2| in the top rail of the outer sashframe 4 may be provided for coacting with sockets in the upper edge ofthe top rail of the inner sash 5, to impositively hold the inner frame 5in closed position. Means is provided for positively locking-the innersash 5 in closed position, which means is operated by the sash lock 42.This comprises spring-pressed bolts 22 in the top rail of the outer sashframe 4 movable vertically into a socket in the top rail of the innerframe 5, the bolt 22 being moved into its locked position by a cam 23 onthe sash lock l2 and coacting with the head 24 of the bolt 22, when thesash lock is operated to lock the upper and lower sashes.

Instead of a piano hinge l5 being used, the inner sash 5 (Figures 4 and5) may be formed with trunnions 25 near its lower ends, which trunnionsextend into sockets 26 in the stiles of the outer frame 4 The extent ofpivotal movement is limited by a stop shoulder 26 or edge at the lowerend of the plate 21 on the stile of the outer sash 4 abutting againstthe edgeof a similar plate on the bottom rail of the inner sash frame 5when the inner sash frame 5 reaches its inclined position. The innersash frame 5 is provided with a suitable handle 30 at its upper end. Theplate 21 extends the length of the stile to lap the joint between thestiles of the inner and outer sash frames. The plate or strip 2! isformed with slots 3| through which the arm 20 of the link I6 extends(Figures 1 and 2).

There is a link H5 at each edge of the inner sash frame 5.

In operation, the sash look I 2 is operated to unlock the inner sashframe 5 and the inner sash frame 5 swung about its axis into inclinedposition by pulling on the handle 30. This moves the link l6 from aposition in line with, or in the plane of, the stiles of the sashes 4,5. into the position shown in Figure 2, and moves the arm 20 into theplane or into the path of the upper sash 3 in case the upper sash ismovable, so that now if an attempt is made to raise the lower sash, thearm 20 would engage the lower rail of the upper sash 3 and block theraising of the lower sash, and also block the lowering of the uppersash, in case the upper sash is movable. A person attempting into getinto the room from the outside would therefore have to close the innersash 5 from inclined position to entirely closed position, and althoughit is fairly easy to move the inner sash frame 5 from the outside of thewindow to nearly closed position, it is difficult to move it to entirelyclosed position without disturbing the occupants of the room. It isnecessary to entirely close the inner sash 5, as the arms 20 remain inposition to block either the raising of the lower sash and the loweringof the upper sash, until the inner sash frame 5 is moved to completelyclosed position.

What we claim is:

1. In a window construction, the combination with a window frame havingsash guides, of upper and lower sashes slidable in parallel planes inthe guides, one being a compound sash consisting of outer and inner sashframes, the inner sash frame being mounted in the outer frame to have anopening and closing movement relatively thereto to provide a ventilatingopening, and means operable by the moving of the inner sash frame intoopen position for locking the lower sash from raising and the upper sashfrom lowering.

2. In a window construction, the combination with a window frame formedwith a sash guide and including a cross rail, of a compound sash movablein the guide and comprising an outer sash frame and an inner sash framehinged to the outer sash frame and movable into open position relativelythereto, and link means operable by the moving of the inner sash frameinto open position for locking the sash from movement in the sash guide,said link means being pivotally connected to the inner edge faces of thestiles of the outer sash frame and to the outer edge of the inner sashframe and including an arm arranged out of the plane of said cross railand movable into the plane of the same and near said cross rail, whenthe inner sash is moved into open position.

3. In a window construction, the combination with a window frame formedwith a sash guide and including a cross rail, of a compound sash movablein the guide and comprising an outer sash frame and an inner sash framehinged to the outer sash frame and movable into open position relativelythereto, and link means operable by the moving of the inner sash frameinto open position for locking the sash from movement in the sash guide,said link means being pivotally connected to the inner edge faces of thestiles of the outer sash frame and to the outer edge of the inner sashframe and including an arm arranged out of the plane of said cross railand movable into the plane of the same and near said cross rail, whenthe inner sash is moved into open position, the connection between' thelink and the inner sash including means by which said link is shifted tomove said arm out of the plane of the rail only when the inner sash isin nearly closed position. 1

4. In a window construction, the combination with a window frame formedwith a sash guide and including a cross rail, of a compound sash movablein the guide and comprising an outer sash frame and an inner sash framehinged to the outer sash frame and movable into an inclined positionrelatively thereto, and means operable by the moving of the inner sashframe into an inclined position for locking the sash from movement inthe sash guide, said means including a link pivotally connected to theinner edge faces of the stiles of the outer sash frame and to the outeredge of the inner sash frame and having an arm extending to the oppositeside of its pivotal connection to the outer frame, to that on which theinner sash is located when in inclined position, said arm being normallyarranged out of the plane of said cross rail and movable into the planeof the same and near said cross rail, when the inner sash is moved intoinclined position, said link being formed with a lengthwise slotterminating near the pivot thereof for receiving a pivotal connectionbetween the inner sash frame and the link, whereby the said pivotalconnection moves along the slot during the opening and closing of theinner sash to and from inclined position, the inner end of the slotbeing located relatively to the pivot of the link to cause pivotalmovement of the link to carry said arm out of the plane of the crossrail only when the inner sash is in nearly closed position.

OLIVER M. EDWARDS. RUSSELL B. NELSON.

